Three varieties of microwaveable Kraft Foods pasta is being recalled after the "possible presence of small, thin wire bristle pieces" in Velveeta-branded cups.

The voluntary recall affects only products bought in the United States, not Canada according to a released statement.

The recall involves Velveeta Shells & Cheese Single Serve Microwaveable Cups. The products affected can be found by looking at a certain number of "best when used by" dates on the product “due to the possible presence of small, thin wire bristle pieces," the company said..

The list which also includes Velveeta Rotini & Cheese is as follows:

Velveeta Shells & Cheese Original Microwaveable Cups, 2.39 oz cup, Best When Used by 16 MAY 2012. UPC 2100002322.

Velveeta Shells & Cheese Original Four Pack Microwaveable Cups, 4 x 2.39 oz. cup, Best When Used by 24 APR 2012 to 16 MAY 2012. UPC 2100002339.

Velveeta Shells & Cheese Made with 2% Milk Microwaveable Cups, 2.19 oz cup, Best When Used by 25 MAR 2012 to 30 MAR 2012. UPC 2100002323.

Velveeta Shells & Cheese Made with 2% Milk Four Pack Microwaveable Cups, 4 x 2.19 oz cup, Best When Used By 29 MAR 2012 to 12 APR 2012. UPC 2100002946.

Velveeta Rotini & Cheese Broccoli Microwaveable Cups, 2.44 oz cup, Best When Used By 29 APR 2012 to 14 MAY 2012. UPC 2100002318.